This should include a warning that transport wire frames need to match this unit size or game may crash when unloading unit. I had experienced such a crash with ARAI, and it has reappeared in PEAI. For unit sizes of 1, it appears the total size of frame (red in pyGRP) needs to be contained in a 32x32 area. I had a stray pixel on my tank wireframe in which the unit was reduced to a "1" transport space unit. This single stray pixel caused mod to crash.